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#include "mkql_if.h"
#include <yql/essentials/minikql/computation/mkql_computation_node_codegen.h> // Y_IGNORE
#include <yql/essentials/minikql/mkql_node_cast.h>
#include <yql/essentials/minikql/mkql_node_builder.h>
namespace NKikimr {
namespace NMiniKQL {
namespace {
template<bool IsOptional>
class TIfWrapper : public TMutableCodegeneratorNode<TIfWrapper<IsOptional>> {
using TBaseComputation = TMutableCodegeneratorNode<TIfWrapper<IsOptional>>;
public:
TIfWrapper(TComputationMutables& mutables, EValueRepresentation kind, IComputationNode* predicate, IComputationNode* thenBranch, IComputationNode* elseBranch)
: TBaseComputation(mutables, kind)
, Predicate(predicate)
, ThenBranch(thenBranch)
, ElseBranch(elseBranch)
{}
NUdf::TUnboxedValuePod DoCalculate(TComputationContext& ctx) const {
const auto& predicate = Predicate->GetValue(ctx);
if (IsOptional && !predicate) {
return NUdf::TUnboxedValuePod();
}
return (predicate.Get<bool>() ? ThenBranch : ElseBranch)->GetValue(ctx).Release();
}
#ifndef MKQL_DISABLE_CODEGEN
Value* DoGenerateGetValue(const TCodegenContext& ctx, BasicBlock*& block) const {
auto& context = ctx.Codegen.GetContext();
const auto then = BasicBlock::Create(context, "then", ctx.Func);
const auto elsb = BasicBlock::Create(context, "else", ctx.Func);
const auto done = BasicBlock::Create(context, "done", ctx.Func);
const auto value = GetNodeValue(Predicate, ctx, block);
const auto result = PHINode::Create(value->getType(), IsOptional ? 3U : 2U, "result", done);
if (IsOptional) {
result->addIncoming(value, block);
const auto good = BasicBlock::Create(context, "good", ctx.Func);
BranchInst::Create(done, good, IsEmpty(value, block), block);
block = good;
}
const auto cast = CastInst::Create(Instruction::Trunc, value, Type::getInt1Ty(context), "bool", block);
BranchInst::Create(then, elsb, cast, block);
{
block = then;
const auto left = GetNodeValue(ThenBranch, ctx, block);
result->addIncoming(left, block);
BranchInst::Create(done, block);
}
{
block = elsb;
const auto right = GetNodeValue(ElseBranch, ctx, block);
result->addIncoming(right, block);
BranchInst::Create(done, block);
}
block = done;
return result;
}
#endif
private:
void RegisterDependencies() const final {
this->DependsOn(Predicate);
this->DependsOn(ThenBranch);
this->DependsOn(ElseBranch);
}
IComputationNode* const Predicate;
IComputationNode* const ThenBranch;
IComputationNode* const ElseBranch;
};
template<bool IsOptional>
class TFlowIfWrapper : public TStatefulFlowCodegeneratorNode<TFlowIfWrapper<IsOptional>> {
using TBaseComputation = TStatefulFlowCodegeneratorNode<TFlowIfWrapper<IsOptional>>;
public:
TFlowIfWrapper(TComputationMutables& mutables, EValueRepresentation kind, IComputationNode* predicate, IComputationNode* thenBranch, IComputationNode* elseBranch)
: TBaseComputation(mutables, nullptr, kind)
, Predicate(predicate)
, ThenBranch(thenBranch)
, ElseBranch(elseBranch)
{}
NUdf::TUnboxedValuePod DoCalculate(NUdf::TUnboxedValue& state, TComputationContext& ctx) const {
if (state.IsInvalid()) {
state = Predicate->GetValue(ctx);
}
if (IsOptional && !state) {
return NUdf::TUnboxedValuePod::MakeFinish();
}
return (state.Get<bool>() ? ThenBranch : ElseBranch)->GetValue(ctx).Release();
}
#ifndef MKQL_DISABLE_CODEGEN
Value* DoGenerateGetValue(const TCodegenContext& ctx, Value* statePtr, BasicBlock*& block) const {
auto& context = ctx.Codegen.GetContext();
const auto init = BasicBlock::Create(context, "init", ctx.Func);
const auto test = BasicBlock::Create(context, "test", ctx.Func);
const auto then = BasicBlock::Create(context, "then", ctx.Func);
const auto elsb = BasicBlock::Create(context, "else", ctx.Func);
const auto done = BasicBlock::Create(context, "done", ctx.Func);
BranchInst::Create(init, test, IsInvalid(statePtr, block), block);
block = init;
GetNodeValue(statePtr, Predicate, ctx, block);
BranchInst::Create(test, block);
block = test;
const auto valueType = Type::getInt128Ty(context);
const auto state = new LoadInst(valueType, statePtr, "state", block);
const auto result = PHINode::Create(valueType, IsOptional ? 3U : 2U, "result", done);
if (IsOptional) {
result->addIncoming(state, block);
const auto good = BasicBlock::Create(context, "good", ctx.Func);
BranchInst::Create(done, good, IsEmpty(state, block), block);
block = good;
}
const auto cast = CastInst::Create(Instruction::Trunc, state, Type::getInt1Ty(context), "bool", block);
BranchInst::Create(then, elsb, cast, block);
{
block = then;
const auto left = GetNodeValue(ThenBranch, ctx, block);
result->addIncoming(left, block);
BranchInst::Create(done, block);
}
{
block = elsb;
const auto right = GetNodeValue(ElseBranch, ctx, block);
result->addIncoming(right, block);
BranchInst::Create(done, block);
}
block = done;
return result;
}
#endif
private:
void RegisterDependencies() const final {
if (const auto flow = this->FlowDependsOnBoth(ThenBranch, ElseBranch))
this->DependsOn(flow, Predicate);
}
IComputationNode* const Predicate;
IComputationNode* const ThenBranch;
IComputationNode* const ElseBranch;
};
class TWideIfWrapper : public TStatefulWideFlowCodegeneratorNode<TWideIfWrapper> {
using TBaseComputation = TStatefulWideFlowCodegeneratorNode<TWideIfWrapper>;
public:
TWideIfWrapper(TComputationMutables& mutables, IComputationNode* predicate, IComputationWideFlowNode* thenBranch, IComputationWideFlowNode* elseBranch)
: TBaseComputation(mutables, nullptr, EValueRepresentation::Embedded)
, Predicate(predicate)
, ThenBranch(thenBranch)
, ElseBranch(elseBranch)
{}
EFetchResult DoCalculate(NUdf::TUnboxedValue& state, TComputationContext& ctx, NUdf::TUnboxedValue*const* output) const {
if (state.IsInvalid()) {
state = Predicate->GetValue(ctx);
}
return (state.Get<bool>() ? ThenBranch : ElseBranch)->FetchValues(ctx, output);
}
#ifndef MKQL_DISABLE_CODEGEN
TGenerateResult DoGenGetValues(const TCodegenContext& ctx, Value* statePtr, BasicBlock*& block) const {
auto& context = ctx.Codegen.GetContext();
const auto init = BasicBlock::Create(context, "init", ctx.Func);
const auto test = BasicBlock::Create(context, "test", ctx.Func);
const auto then = BasicBlock::Create(context, "then", ctx.Func);
const auto elsb = BasicBlock::Create(context, "else", ctx.Func);
const auto done = BasicBlock::Create(context, "done", ctx.Func);
BranchInst::Create(init, test, IsInvalid(statePtr, block), block);
block = init;
GetNodeValue(statePtr, Predicate, ctx, block);
BranchInst::Create(test, block);
block = test;
const auto valueType = Type::getInt128Ty(context);
const auto state = new LoadInst(valueType, statePtr, "state", block);
const auto result = PHINode::Create(Type::getInt32Ty(context), 2, "result", done);
const auto cast = CastInst::Create(Instruction::Trunc, state, Type::getInt1Ty(context), "bool", block);
BranchInst::Create(then, elsb, cast, block);
block = then;
const auto left = GetNodeValues(ThenBranch, ctx, block);
result->addIncoming(left.first, block);
BranchInst::Create(done, block);
block = elsb;
const auto right = GetNodeValues(ElseBranch, ctx, block);
result->addIncoming(right.first, block);
BranchInst::Create(done, block);
block = done;
MKQL_ENSURE(left.second.size() == right.second.size(), "Expected same width of flows.");
TGettersList getters;
getters.reserve(left.second.size());
const auto index = static_cast<const IComputationNode*>(this)->GetIndex();
size_t idx = 0U;
std::generate_n(std::back_inserter(getters), right.second.size(), [&]() {
const auto i = idx++;
return [index, lget = left.second[i], rget = right.second[i]](const TCodegenContext& ctx, BasicBlock*& block) {
auto& context = ctx.Codegen.GetContext();
const auto then = BasicBlock::Create(context, "then", ctx.Func);
const auto elsb = BasicBlock::Create(context, "elsb", ctx.Func);
const auto done = BasicBlock::Create(context, "done", ctx.Func);
const auto valueType = Type::getInt128Ty(context);
const auto result = PHINode::Create(valueType, 2, "result", done);
const auto statePtr = GetElementPtrInst::CreateInBounds(valueType, ctx.GetMutables(), {ConstantInt::get(Type::getInt32Ty(context), index)}, "state_ptr", block);
const auto state = new LoadInst(valueType, statePtr, "state", block);
const auto trunc = CastInst::Create(Instruction::Trunc, state, Type::getInt1Ty(context), "trunc", block);
BranchInst::Create(then, elsb, trunc, block);
block = then;
result->addIncoming(lget(ctx, block), block);
BranchInst::Create(done, block);
block = elsb;
result->addIncoming(rget(ctx, block), block);
BranchInst::Create(done, block);
block = done;
return result;
};
});
return {result, std::move(getters)};
}
#endif
private:
void RegisterDependencies() const final {
if (const auto flow = FlowDependsOnBoth(ThenBranch, ElseBranch))
DependsOn(flow, Predicate);
}
IComputationNode* const Predicate;
IComputationWideFlowNode* const ThenBranch;
IComputationWideFlowNode* const ElseBranch;
};
}
IComputationNode* WrapIf(TCallable& callable, const TComputationNodeFactoryContext& ctx) {
MKQL_ENSURE(callable.GetInputsCount() == 3, "Expected 3 args");
bool isOptional;
const auto predicateType = UnpackOptionalData(callable.GetInput(0), isOptional);
MKQL_ENSURE(predicateType->GetSchemeType() == NUdf::TDataType<bool>::Id, "Expected bool or optional of bool.");
const auto predicate = LocateNode(ctx.NodeLocator, callable, 0);
const auto thenBranch = LocateNode(ctx.NodeLocator, callable, 1);
const auto elseBranch = LocateNode(ctx.NodeLocator, callable, 2);
const auto type = callable.GetType()->GetReturnType();
if (type->IsFlow()) {
const auto thenWide = dynamic_cast<IComputationWideFlowNode*>(thenBranch);
const auto elseWide = dynamic_cast<IComputationWideFlowNode*>(elseBranch);
if (thenWide && elseWide && !isOptional)
return new TWideIfWrapper(ctx.Mutables, predicate, thenWide, elseWide);
else if (!thenWide && !elseWide) {
if (isOptional)
return new TFlowIfWrapper<true>(ctx.Mutables, GetValueRepresentation(type), predicate, thenBranch, elseBranch);
else
return new TFlowIfWrapper<false>(ctx.Mutables, GetValueRepresentation(type), predicate, thenBranch, elseBranch);
}
} else {
if (isOptional) {
return new TIfWrapper<true>(ctx.Mutables, GetValueRepresentation(type), predicate, thenBranch, elseBranch);
} else {
return new TIfWrapper<false>(ctx.Mutables, GetValueRepresentation(type), predicate, thenBranch, elseBranch);
}
}
THROW yexception() << "Wrong signature.";
}
}
}
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